/*
* Copyright (c) 2014 Spotify AB.
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package com.spotify.helios.master.metrics;
import com.google.common.collect.Maps;
import com.spotify.helios.servicescommon.statistics.MasterMetrics;
import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.spi.dispatch.RequestDispatcher;
import java.util.concurrent.ConcurrentMap;
import javax.ws.rs.WebApplicationException;
public class ReportingResourceMethodDispatcher implements RequestDispatcher {
private final RequestDispatcher dispatcher;
private final MasterMetrics metrics;
private final ConcurrentMap<Object, String> keys = Maps.newConcurrentMap();
public ReportingResourceMethodDispatcher(final RequestDispatcher dispatcher,
final MasterMetrics metrics) {
this.dispatcher = dispatcher;
this.metrics = metrics;
}
@Override
public void dispatch(final Object resource, final HttpContext context) {
final AbstractResourceMethod resourceMethod = context.getUriInfo().getMatchedMethod();
final String key = getKey(resourceMethod);
try {
dispatcher.dispatch(resource, context);
metrics.success(key);
} catch (WebApplicationException e) {
final int status = e.getResponse().getStatus();
if (status == 404) {
metrics.success(key);
} else if (status > 400 && status < 500) {
metrics.badRequest(key);
} else {
metrics.failure(key);
}
throw e;
} catch (Exception e) {
metrics.failure(key);
throw e;
}
}
private String getKey(final AbstractResourceMethod resourceMethod) {
final String key = keys.get(resourceMethod);
if (key == null) {
final String name = resourceMethod.getMethod().getDeclaringClass().getSimpleName() + "#" +
resourceMethod.getMethod().getName();
keys.put(resourceMethod, name);
return name;
}
return key;
}
}